chore: add files cache for reading template tar archives from db (#17141)

archive/fs/tar.go

@@ -0,0 +1,17 @@
+package archivefs
+
+import (
+	"archive/tar"
+	"io"
+	"io/fs"
+
+	"github.com/spf13/afero"
+	"github.com/spf13/afero/tarfs"
+)
+
+func FromTarReader(r io.Reader) fs.FS {
+	tr := tar.NewReader(r)
+	tfs := tarfs.New(tr)
+	rofs := afero.NewReadOnlyFs(tfs)
+	return afero.NewIOFS(rofs)
+}